Nut-lock.



' No. 709,043. Patented Sept. I6, 1902. a. H. RDBERTS, Sn.

NUT LUCK.

(Application filed Sept. 14. 1901.)

(No Model.)

INVENTOH THE NORRI5 PETERS 00.. PnoTc-Lmimwnsnmu'ron, n c.

UNITED STATES PATENT OFFICE.

GEORGE H. ROBERTS, SR., OF NEWV YORK, N. Y.

NUT-LOCK SPECIFICATION forming part of Letters Patent No.709,043, datedSeptember 16, 1902.

Application filed September 14,1901. Serial No. 75,396. (No model.)

To all whom, it may concern:

Be it known that I, GEORGE H. ROBERTS, Sn, a citizen of the UnitedStates, residing at New York, in the county and State of New York, haveinvented certain new and useful Improvements in Nut-Locks, of which thefollowing is a specification.

This invention relates to nut-locks; and it has for its object toprovide an improved device of this class which will be superior in pointof positiveness of operation, simplicity of construction, facility ofconnection and disconnection, and general efficiency and durability.

In the drawings, Figure 1 is a face View of my improved nut-lock,showing'the same in use. Fig. 2 is a detail transverse sectional viewtaken upon the line a: 00, Fig. 1. Fig. 3 is a detail view ofan elementof my improved nut-1ock in detached position. Fig. 4 is a similar viewshowing a modified form of construction.

Corresponding parts in all the figures are denoted by the same referencecharacters.

Referring to the drawings, 1 designates my improved nut-lock, whichoperates in connection with the work 2 to effectually lock the nutagainst detachment or unscrewing. The improved nut-lock embodies a stopmember 3, which is securely attached to the work 2, and a key member 3which operates in connection with the stop member and with the nut 4:.The stop member 3 is preferably carried by a base-plate 5, which iscarried by the work 2, and may be provided with fixed studs or plugs G,which are secured in openings 7 in the work 2. The base-plate 5 isprovided with a centrally-arranged bolt-opening 8, through which thebolt projects from the work, and the studs or plugs 6 are preferablyarranged at opposite sides of the opening 8 to firmly center thebase-plate 5 with respect to the bolt. The stop member 3 is arranged atone side or end of the base-plate 5. In the preferred form ofconstruction the stop member 3 consists of an angular piece or block 9,and the key member 3 is formed to closely fit said angular piece orblock 9 and to bear upon one or more faces of the nut, the angularformation of the piece or block forming an angular seat 10 for the keymember. The key member 3 consists of a straight shank portion 11, oneside edge 12 of which is formed to fit the angular seat 10, embodied inthe stop member, and the other side edge portion 13 of which is formedto engage with one of the faces of the nut and may be provided with anenlargement forming a shoulder 14, whereby a moreeifectual engagementwith the face of the nut is obtained. The shank port-ion 11 is providedwith a head 15, one side edge of which, 16, is formed and arranged atthe proper angle with the side edge 13 of the shank for operativeengagement with another face of the nut at. The opposite side of thehead 15 embodies a side edge portion 17, which is formed and arranged atthe proper angle with the side edge portion 12 of the shank 11 forengagement with the end of the stop member 3 or angular piece or block 9to maintain the key member in proper operative position. The head 15 mayalso be provided with an opening 18, through which any suitable securingdevice (not shown) may be passed for further securing the key memher inposition.

At the end of the shank portion 11 opposite that on which the head 15 isformed a narrow prong or finger 19 is arranged and normally projects inalinement with and as an extension of the shank 11. The prong or finger19, when the key member is in operative position in engagement with thestop member and with the nut, may be bent into engagement with still athird face of the nut, as shown in Fig. 1, to more effectually lock thenut in position.

In the modified form of construction illustrated in Fig. 4 the shoulder14 is arranged upon the opposite side edge portion of the shank 11,whereby it may be engaged with the stop member 3 and whereby the otherside edge portion 20 may be engaged in a suitable recess formed in thenut. This construction is a mere reversal of that shown in Figs. 1, 2,and 3,'the main parts of the key memher being the same as that shown inthe figures above referred to.

The operation and advantages of my i1nproved nut-lock will be readilyunderstood. The nut is firmly screwed home against the base-plate 5 andis brought into proper position to admit the key member 3 between thesame and the stop member 3. The key-shank 11 is then slidably insertedinto the seat of the stop member, so that the shoulder 14 and the sideedge portion 13 of the same bear against the face of the nut, and theside edge portions 16 and 17, respectively, of the head 15 of the keymember bear against the nut at and the end of the stop member 3. Theprong or finger 19 upon the key-shank is then bent into engagement withthe adjacent face of the nut. It will be noted that the nut is firmlyengaged in locked position upon three of its faces by the shoulder 14and the side edge portion 13 of the key-shank, by the side edge portion16 of the key-head, and by the prong or finger 19, respectively, andthat the nut is thus firmly maintained in locked condition in connectionWith the work. To release the nut,the prong or finger 19 is straightenedout and the key member is withdrawn from the seat 10 of the stop member.

I do not desire to be understood as limiting myself to the details ofconstruction and arrangement as herein described and illustrated, as itis manifest thatvariations and modifications may be made in the featuresof construction and arrangement-in the adaptation of the device tovarious conditions ofuse without departing from the spirit and scope ofmy invention and improvements. I therefore reserve the right to all suchvariation and modification as properly fall within the scope of myinvention and the terms of the following claims. v

Having thus described my invention, I

claim and desire to secure by Letters Patentmists 1. A device of theclass described, comprisinga base-plate provided with means to preventthe rotation thereof and at one side of its upper surface with anupwardly-projectin g rib having at the top thereof an inwardlyextendingshoulder and a locking device fitting under said shoulder and againstsaid rib and pressing against the nut and provided with a head bearingon one side against one face of the base-plate and on the other sideagainst one face of the nut and with the end portion adapted to be bentinto engagement with another face of the nut. V

2. A device of the class described, comprising a base-plate providedwith means to pre= vent the rotation thereof and at one side of itsupper surface with an upwardly-project ing rib having at the top thereofan inwardly projecting shoulder and a locking device fitting under saidshoulder and against said rib and between the nut and base-plate andprovided with a shoulder bearing against the nut and with a headprojecting from opposite sides of said device and bearing against thebase-plate and nut and with an end portion bent into engagement withanother face of the nut.

In testimony whereof I have signed my name in the presence of thesubscribing witnesses.

GEORGE H. ROBERTS, SR.

Witnesses:

J. R. LITTELL, HARTWELL P. IIEATH.

